Cutter for shale planers



J'. M.` POWELL. CUUER FOR SHLE PLANEHS. APPLICATION man JUNEzz, 11921.

PatentedJune 6, 1922.`

J. L .K

, dwf-0%@ atto/unam,

JOSEPH M. POWELL, OF BROOKLYN, INDIANA,-ASSIGI\TOB TO EAG-LE ZlROhT` WORKS, DES MOINES, IOW.A, A`CORPORATIO1\T OF IOWA.

`CU2-urna non, smi-Ln rLANEns. l

T 0 all whom it may 'conce/m f e 1t known that l, JOSEPH M. POWELL, a citizen of the United States, residing at Brooklyn, in the Acounty of Morgan and the cutters have ordinarily been yprovided with rearwardly extending arms which cooperated with guides tov keep the cutter-*carrying bars from beingtilted by the reaction ofthe cutting. `This has resulted in a two! fold" diiculty; first, in :producing a transverse pressure on the rear ends of such arms, resulting in great friction between the wearing shoes on, such endsk and the guides in which they travel, with considerable wear and Isonie loss in power; and second, in interfering with the passage of the chain around its supporting sprockets, as the ends 0f the arms then project out of the path of the chain, and it was necessary to cut away' the guides to' allow clearance for them.

It is the object'ofmy present invention to avoid both phases of this difliculty.

In accomplishing this result, I provide the cutter-carrying bar with an arin which projects from the plane of the chain on the opposite side thereof from the edge of the cutter, and I' connect this arm by a liexible tension member, such as a short length of chain, with a'supplemental'transverse 'bar some distance `behind the cuttei-carrying bar, so that the tension member is at a slight' oblique angle to the plane of the main chain."

This both simplifies the passage of the main chain aroundy the sprockets, and reducesy the wear on theparts and the` power required for operation; while effectively holding the cutters from tilting and permitting the cutters to be radial as they travel around the sprockets. s l t The accompanying drawing illustratesmy invention. Fig. 1 is a vertical v'central section on the line 1 1 of Fig. 2, through a fragment of agcutter 'chainl having cutters mounted thereon in accordance with my invention, andr showing one of the associated sprocket wheels; Fig. 2 is a fragmentary# front elevation of such cutter chain; Fig. 3 is Specification of Letters Patent. Pgt'tnted June 6,1922,

Application flied June 22, i i l l.

192i. i serial no. Meats@ a section 'on the line 3 3 of lFig. 2'; and l' I l a fragmentary perspective view of the middle portion fof the cutter-carrying bari' with acutter iii place therein;y f

The cutter chain comprises two` parallel chain members 10" and 1.1,l which are cross connected by cutter-carrying bars 12 and other interspersed crossbars 13; and the chains l10 `and 11 'arepcarriedv by suitable sprocketsI 14:, and are guided by suitable guide-ways 15, 'preferably yby the coopera-y tion with such guidefwaysv of slices 16 mounted on the ends of the cross-bars12 and 13 and on thoselinks of the lchains 1,0 and 11 to which the cross-'bars 12 and 13 arefas-ly tened. Boththe .crossbars 12v and. 13' are conveniently T-irons, withthe cross flange cut awaywhere such cross-bars pass through links of the chains lOand' *'11; byy making these asv `T-irons, the cross flangesthereof serve as Scrapers, to scrape oiflany projecting portions of shale from, the shale bank` and to scrape the vrplaned shale through iany trough or chute'with which the cutter-chain:

may be associated.' p g Each cutter-carrying cross-bar 12 is provided .with av socket member, which is set"v in the angle between the stem and one f lange of the 'l' of such cross-bar .on the side toward the shale bank; and isla-lso `provided with at mating member 21' -which is yseated directly opposite the socket member 20in thevothe'r angle between the stem and the fla-nge of the T.'v vThe cutter 22 is'received in the socket 23" inthe socket'meinber v20, and is held thereinby a 'pin2f15 and itinay, and preferably does', pass through thestem of the T and intoa/ similar socketv in theinating member 21, the stein vof the T'being perforated to permit suoli passage of the cutter therethrough.y` The member 21 is "provided withJ a bifurcated arm` 25A which/projects some distance out ofthe plane of the chains 10 and 11 onl the opposite side of suchplane from the edge of the cutter 22, `and a cross pin 26 through tlieen'd of such bifurcated arm 25passes through one end-link'of ja chain 27, the otherend-link of which is Aattached to a Ubolt 28, which is fastened to the fianges'of 'theT o'fly the cross-bar 18 next behind the aforesaid cross-bar 12.- The chain 27 isa -flexible tension member taking longitudinalstresses, be# tween the pin 26and the U-bolt 28.

ln' operation, when the chainslO vand 14Cy ioe iiof

edges backward and thus to tilt the cuttercarrying bars 12. This tendency to tilt is `effectively resisted by the tension chains 27,

which connect the arms 25 to the cross-bars 13H behind.V vThis holds ,the cutter 22 in proper position. It isfounddn practice that the transverse component of force tending to offset the cross-bars fllaterally, out of the plane of the chains. 1() and 11, is relatively slight, so that there is relatively little wear on the jaws 16 at the ends of such cross-bars 18, and so relativelyhlittle loss of power by reason of the friction of such jaws with the guides 15. lVhen the rcutters 22 have reached the bottoni ,of their cut, and their supporting cross-bars 12 `come into 'cooperation `with the sprocket 111,P thechain linksf'carrying ysuch cross bars turn vfreely to conforml to the sprocket, and the associated tension chains 27 slacken, as is clear from thelower part of F ig. 1, .without any partsfprojecting,forward from the plane of the chains 10 and 11, and with the cutters radial with respect to the sprockets, so that the guides 15 may be continued to a point very close to the sprocket 14.

l claimas my invention; A y l 1. A cutter-chain` for shale planers, comprising two parallel chains, cross-bars connecting such chains, cutters inountedin some of said cross-bars, the cutter-carryingcrossbars being provided with armsprojecting therefrom on the opposite side of the plane ofthe chainsfrom said cutters, and tension members connecting said arms with'cross bars. in the rear of said cutter-`carrying crossebars. l l

2. .A cutter-chain for shale planers, comprisingtwo parallel chains, cross-barsconnecting such chains, cutters mounted in some of said cross-bars, and tension members connecting pointsof said cutter-carrying crossbars offset from the plane of said chains with other cross-bars longitudinallyv displaced from said cutter-carrying bars. l

L-:A cutter-chain for shale Vplaners, comprising twoparallel chains, -cross-,bars con necting such chains, cutters mounted in someof said cross-bars, the cutter-carrying cross-bars being provided with arms projecting therefrom on the opposite side of the plane ofthe chains yfrom said cutters, tension members connecting said arms with cross-bars in the rear of said cutter-carrying crossbars, wearing shoes on the endsl of Vsaid cross-bars, and` guides with which such wearing shoes cooperate. c n f .4. A cutter-chain for shale planers,com prising two parallel chains, cross-bars connecting such chains, cutters mounted in some ofsaid crossfb'ars, and tension members connecting points -of said cutter-carrying cross bars offset from the plane of said chains with other cross-bars longitudinally displaced from said cutter-carrying cross-bars, wearing shoes on the ends of said cross-bars, and

guides with which such wearing shoes cooperate.

5. A cutter-chain for shale planers, coin-k prising two parallel chains, a cutter-carrying cross-bar connecting said chains and l'shaped in cross section, members mounted in the angles of the 'l' of said cross-bar and provided with a socket, a cutter mounted i insaid socket, the otherof said members longitudinally displaced from said cutter carrying cross-bars.

. A cutter-chain said chains with othercross-bars longitudig.

nally displaced from said cutter-carrying crosshars, wearing shoes on thev endsv of said cross-bars,.and guides with which such wear' `ing shoes cooperate.

8. A cutter-chain forshale planers, coinprising two parallel v chains, cross-'bars for shale planers, connl prising two parallelv chains,'crossbars, 'cornl shaped to constitute scrapers andXcross-conv i necting such chains, cutters monntedin some of such cross-bars, and tension members connecting points of said cutter-carrying'crossbars offsety from the plane of saidchains with other cross-bars longitudinally displaced from said cutter-carrying cross-bars- 9. IA cutter-chain for shale planers, coniprising two parallel chains, crossbars,cionnecting such chains, such cross-bars being T-shaped in cross-section, cuttersmounted in some of said cross-bars, yand tension members connectingpoints ofk said cutter-carrying cross-bars'offset from the plane oflsaid chains with other cross-barsl longitudinally displaced from said lcutter-carrying"crossbars. Y l,

In witness whereof,l have hereunto'set my hand at indianapolis, indiana, thisfi'rst day of J une, A'. D. one thousand'nine hun# dred and twenty one.

JosnPH M. PowELL. 

